Next: Available Receivers Up: The Arecibo Observatory and Previous: The Arecibo Observatory and . The main reflector of the telescope is a , 305 m (1000 ft) in diameter and 51 m (167 ft) deep. ... The system housed in the Gregorian dome provides continuous frequency coverage from 300 MHz to 10 GHz using a pair of shaped (secondary and tertiary) subreflectors, plus standard point feeds and receivers. ... Consecutive use of multiple receivers during an observing run is straightforward. ...

... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...